As big as he is, Marmaduke can't create havoc alone. Among the other voices you'll hear in the film are George Lopez, Fergie and McLovin' (aka Christopher Mintz-Plasse).

Parents of preteens will certainly find the movie's PG rating comforting, especially since some flicks of late have carried a PG-13 (we're looking at you, 'Prince of Persia'). Is 'Marmaduke' as brisk as a walk in the park? A top dog of summer films? Let's see if the critics wanted to flea the theater (Okay, okay, sorry).